diff --git a/README.md b/README.md
index b08ba7e..15c9804 100644
--- a/README.md
+++ b/README.md
@@ -39,4 +39,4 @@ Image resizing done by [sharp](http://sharp.dimens.io/) ([github](https://github
     - use some lightbox on the prepared directory
 - further development
     - integration with other projects (iframe? ajax? web component? Polymer?)
-    - config.json support (for specifying conversion settings)
+    - ~~config.json support (for specifying conversion settings)~~
diff --git a/package.json b/package.json
index ef9d26a..eb61a36 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gallerymaker",
-  "version": "0.0.0",
+  "version": "0.0.1",
   "description": "A static html gallery maker",
   "keywords": [
     "gallery",
diff --git a/src/index.js b/src/index.js
index b34c95c..fa90cea 100644
--- a/src/index.js
+++ b/src/index.js
@@ -2,7 +2,7 @@
 
 var fs = require('fs');
 var path = require('path');
-var util = require('util');
+//var util = require('util');
 var sharp = require('sharp');
 
 var utils = require('./utils.js');
@@ -13,15 +13,27 @@ var odir = sanitize(process.argv[4] || idir + '.web');
 
 var clientDir = path.join(__dirname, 'client');
 
-var conf = {
-    width: 700,
-    quality: 80,
-    debug: true,
-    template: 'index.html'
-};
-var EOL = "\n";
-var DEPTH = 2;
-var SORT_DESC = true;
+var conf;
+try { conf = require(path.join(__dirname, '..', 'config.json')); }
+catch (e) { conf = {}; }
+if (!conf.width) conf.width = 700;
+if (!conf.quality) conf.quality = 80;
+if (!conf.fnames) conf.fnames = {}; // odir
+if (!conf.fnames.list) conf.fnames.list = 'list.html';
+if (!conf.fnames.gallery) conf.fnames.gallery = 'gallery.html';
+if (!conf.templates) conf.templates = {}; // clientDir
+if (!conf.templates.index) conf.templates.index = 'index.html';
+if (!conf.assets) conf.assets = {}; // clientDir
+if (!conf.assets.common) conf.assets.common = ['index.js', 'index.css'];
+if (!conf.ignored_files || !conf.ignored_files.push) conf.ignored_files = [];
+if (conf.debug === undefined) conf.debug = true;
+
+for (var ak in conf.assets) conf.ignored_files.push.apply(conf.ignored_files, conf.assets[ak]);
+for (var fk in conf.fnames) conf.ignored_files.push(conf.fnames[fk]);
+
+var EOL = conf.eol ? conf.eol : "\n";
+var DEPTH = conf.html_init_depth ? conf.html_init_depth : 2;
+var SORT_DESC = conf.sort_desc ? conf.sort_desc : true;
 
 var log = conf.debug ? console.log.bind(console) : function () {};
 var logi = function () {
@@ -31,17 +43,17 @@ var logi = function () {
 var ind = depth => utils.indent(depth, DEPTH);
 
 var cmds = {
-    prepare: prepareImages,
+    prepare: () => prepareImages().then(copyAssets('common')),
     list: generateList,
     gallery: generateGallery,
-    all: () => {
-        prepareImages()
+    all: () => prepareImages()
         .then(cont => Promise.all([
+            copyAssets('common'),
+            ['content.json'].concat(cont.cont.map(c => c.dir)),
             generateList(cont),
             generateGallery(cont)
         ]))
-        .then(res => log('All tasks finished!', res.map(r => { return { type: typeof r, lenght: r.length }; })));
-    }
+        .then(res => log('All tasks finished! Files:', res.reduce((c, n) => c.concat(n), []).join(', ')))
 };
 
 if (!cmd || !idir) {
@@ -68,7 +80,11 @@ else if (!cmds[cmd]) {
     process.exit();
 }
 else {
-    cmds[cmd]();
+    cmds[cmd]()
+    .catch(err => {
+        console.log(err);
+        process.exit();
+    });
 }
 
 function prepareImages() {
@@ -79,38 +95,20 @@ function prepareImages() {
         var name = file.replace(/[.][^.]*$/, '');
 
         return sharp(path.join(srcDir, file))
-            .resize(conf.width)
-            .quality(conf.quality)
-            .toFile(path.join(destDir, fname))
-            .then(() => {
-                return { file: fname, name: name };
-            }, err => {
-                console.log('Resizing "' + file + '" ' + err);
-                return new Promise((resolve) => {
-                    var rs = fs.createReadStream(path.join(srcDir, file));
-                    var ws = fs.createWriteStream(path.join(destDir, fname));
-                    ws.on('error', e => {
-                        resolve({ file: '', name: name, error: 'Writing file failed: ' + e + '; ' + err });
-                    });
-                    rs.on('end', () => {
-                        resolve({ file: fname, name: name, error: '' + err });
-                        ws.end();
-                    });
-                    rs.pipe(ws, { end: false });
-                });
-            });
+        .resize(conf.width)
+        .quality(conf.quality)
+        .toFile(path.join(destDir, fname))
+        .then(() => ({ file: fname, name: name }))
+        .catch(sharpErr => utils.copyFile(srcDir, file, destDir, fname)
+            .then(() => ({ file: fname, name: name, error: '' + sharpErr }))
+            .catch(writeErr => ({ file: '', name: name, error: writeErr }))
+        );
     })
+    .then(cont => utils.writeFile(cont, 'content.json', odir))
     .then(cont => {
-        log('Image preparation done!');
-        return utils.writeFile(JSON.stringify(cont), 'content.json', odir);
-    })
-    .then(cont => {
-        log('Content:', util.inspect(cont, { showHidden: false, depth: null }));
+        //log('Preparing images finished. Content:', util.inspect(cont, { showHidden: false, depth: null }));
+        log('Preparing images finished:', ['content.json'].concat(cont.cont.map(c => c.dir)).join(', '));
         return cont;
-    })
-    .catch(err => {
-        console.log(err);
-        process.exit();
     });
 }
 
@@ -118,25 +116,113 @@ function generateList(cont) {
     log('Generating file list');
 
     return getContent(cont)
-    .then(cont => {
-        //log('content:', util.inspect(cont, { showHidden: false, depth: null }));
-        return cont
-    })
     .then(cont => getListEntryHtml(cont.cont))
-    .then(html => getPageHtml(html))
+    .then(html => getPageHtml(html, conf.templates.index))
     .then(html => Promise.all([
-        utils.writeFile(html, 'list.html', odir),
-        utils.copyFile(clientDir, 'index.css', odir),
-        utils.copyFile(clientDir, 'index.js', odir)
+        utils.writeFile(html, conf.fnames.list, odir, true)
     ]))
     .then(res => {
-        log('Generated files:', res);
-        return res[0];
+        log('Generating file list finished:', res.join(', '));
+        return res;
+    });
+}
+
+function generateGallery(cont) {
+    log('Generating gallery');
+
+    return getContent(cont)
+    .then(cont => getGalleryEntryHtml(cont.cont))
+    .then(html => getPageHtml(html, conf.templates.index))
+    .then(html => Promise.all([
+        utils.writeFile(html, conf.fnames.gallery, odir, true)
+    ]))
+    .then(files => {
+        log('Generating gallery finished:', files.join(', '));
+        return files;
+    });
+}
+
+function copyAssets(asskey) {
+    log('Copying', asskey, 'assets');
+    var fnames = conf.assets[asskey] ? conf.assets[asskey] : asskey && asskey.map ? asskey : [];
+
+    return Promise.all(fnames.map(fname => utils.copyFile(clientDir, fname, odir)))
+    .then(files => {
+        log('Copying', asskey, 'assets finished:', files.join(', '));
+        return files;
+    });
+}
+
+/**
+ * Creates sanitized mirror of a directory tree and grants access to its files
+ *
+ * @param {string} dir Path of the directory to be processed
+ * @param {function({string}, {string}, {string})} cb(file, srcDir, destDir) File transformator
+ * @param {boolean} nomkdir Disable (sanitized) mkdir of the directory being processed
+ * @param {int} [depth=0] Indents log messages according to an actual depth
+ * @returns {void}
+ */
+function mirrorDirTree(dir, cb, nomkdir, depth) {
+    depth = depth === undefined ? 0 : depth += 1;
+    var destDir = dir === idir ? odir : path.join(odir, sanitize(dir.replace(idir, '')));
+
+    return new Promise((resolve, reject) => fs.readdir(dir, (err, files) => {
+        if (err) reject('Reading directory "' + dir + '" failed: ' + err);
+        if (files === undefined) reject('Directory "' + dir +'" does not exist!');
+        if (files.length && !fs.existsSync(destDir) && !nomkdir) fs.mkdirSync(destDir);
+        if (files.filter) files = files.filter(file => conf.ignored_files.indexOf(file) === -1);
+        if (SORT_DESC) files.reverse();
+        resolve(files);
+    }))
+    .then(files => Promise.all(files.map(file =>
+        new Promise((resolve, reject) => fs.stat(path.join(dir, file), (err, stat) => {
+            if (stat.isDirectory())
+                resolve(mirrorDirTree(path.join(dir, file), cb, nomkdir, depth));
+            else if (typeof cb === 'function')
+                resolve(cb(file, dir, destDir, depth + 1));
+            else
+                reject('No file processing callback provided.');
+        }))
+    )))
+    .then(items => {
+        logi(depth, '[dir]', dir);
+        items.forEach(item => logi(depth + 1, item.error ? '[error] ' + item.file + ' ' + item.error
+            : item.file ? '[file] ' + item.file : item.dir ? '[dir] ' + item.dir : item));
+        return { dir: destDir.replace(/^.*\//, ''), name: dir.replace(/^.*\//, ''), cont: items };
+    });
+}
+
+function getContent(cont) {
+    return new Promise((resolve, reject) => {
+        if (cont) resolve(cont);
+        fs.readFile(path.join(odir, 'content.json'), (err, data) => {
+            if (err) reject(err);
+            else if (!data) reject('File empty: ' + path.join(odir, 'content.json'));
+            try { resolve(JSON.parse(data)); }
+            catch (e) { reject(path.join(odir, 'content.json') + ' parsing failed: ' + e); }
+        });
     })
     .catch(err => {
-        console.log(err);
-        process.exit();
-    });
+        console.log('Content cache reading failed: ' + err + '; Re-reading directory tree');
+        return mirrorDirTree(odir, file => ({ file: file }), true);
+    })
+}
+
+function sanitize(path) {
+    return utils.diaStrip(path).replace(/\ /g, '_')
+        .replace(/([.][^.]*)$/, match => String.prototype.toLowerCase.call(match));
+}
+
+function getPageHtml(htmlPart, pageFname) {
+    var pageFile = path.join(clientDir, pageFname);
+
+    return new Promise((resolve, reject) => fs.readFile(pageFile, 'utf-8', (err, data) => {
+        if (err) reject(err);
+        else if (!data) reject('File empty: ' + pageFile);
+        resolve(data);
+    }))
+    .then((pageHtml) => pageHtml.substring(0, pageHtml.search('[ ]*</body>'))
+        + htmlPart + pageHtml.substr(pageHtml.search('[ ]*</body>')));
 }
 
 function getListEntryHtml(cont, dir, depth) {
@@ -156,34 +242,6 @@ function getListEntryHtml(cont, dir, depth) {
     return html;
 }
 
-function getPageHtml(htmlPart, pageFname) {
-    pageFname = pageFname || conf.template;
-    return new Promise((resolve, reject) => {
-        var pageFile = path.join(clientDir, pageFname);
-        fs.readFile(pageFile, 'utf-8', (err, data) => {
-            if (err) reject(err);
-            else if (!data) reject('File empty: ' + pageFile);
-            resolve(data);
-        });
-    })
-    .then((pageHtml) => {
-        return pageHtml.substring(0, pageHtml.search('[ ]*</body>')) + htmlPart
-            + pageHtml.substr(pageHtml.search('[ ]*</body>'));
-    });
-}
-
-function generateGallery(cont) {
-    log('Generating gallery');
-
-    return getContent(cont)
-    .then(cont => getGalleryEntryHtml(cont.cont))
-    .then(cont => {
-        log('Gallery prepared!');
-        log('content:', util.inspect(cont, { showHidden: false, depth: null }));
-        return cont;
-    });
-}
-
 function getGalleryEntryHtml(cont) {
 
     var html = '';
@@ -192,67 +250,3 @@ function getGalleryEntryHtml(cont) {
 
     return html;
 }
-
-/**
- * Creates sanitized mirror of a directory tree and grants access to its files
- *
- * @param {string} dir Path of the directory to be processed
- * @param {function({string}, {string}, {string})} cb(file, srcDir, destDir) File transformator
- * @param {boolean} nomkdir Disable (sanitized) mkdir of the directory being processed
- * @param {int} [depth=0] Indents log messages according to an actual depth
- * @returns {void}
- */
-function mirrorDirTree(dir, cb, nomkdir, depth) {
-    depth = depth === undefined ? 0 : depth += 1;
-
-    return new Promise((resolve, reject) => fs.readdir(dir, (err, files) => {
-        if (err) reject('Reading directory "' + dir + '" failed: ' + err);
-        //logi(depth, '[dir]', dir.replace(/^.*\//, ''));
-
-        var destDir = dir === idir ? odir : path.join(odir, sanitize(dir.replace(idir, '')));
-        if (!nomkdir && files.length && !fs.existsSync(destDir)) {
-            logi(depth, '[mkdir]', destDir);
-            fs.mkdirSync(destDir);
-        }
-
-        if (SORT_DESC)
-            files.reverse();
-
-        return Promise.all(files.map(file => {
-            return new Promise((resolve) => fs.stat(path.join(dir, file), (err, stat) => {
-                if (stat.isDirectory())
-                    resolve(mirrorDirTree(path.join(dir, file), cb, nomkdir, depth));
-                else if (typeof cb === 'function')
-                    resolve(cb(file, dir, destDir, depth + 1));
-            }));
-        }))
-        .then(items => {
-            logi(depth, 'finished:');
-            items.forEach(item => logi(depth + 1, item.error ? '[error] ' + item.file + ' ' + item.error
-                : item.file ? '[file] ' + item.file : item.dir ? '[dir] ' + item.dir : item));
-            resolve({ dir: destDir.replace(/^.*\//, ''), name: dir.replace(/^.*\//, ''), cont: items });
-        });
-    }));
-}
-
-function getContent(cont) {
-    return new Promise((resolve, reject) => {
-        if (cont) resolve(cont);
-        else
-            fs.readFile(path.join(odir, 'content.json'), (err, data) => {
-                if (err) reject(err);
-                else if (!data) reject('File empty: ' + path.join(odir, 'content.json'));
-                try { resolve(JSON.parse(data)); }
-                catch (e) { reject(path.join(odir, 'content.json') + ' parsing failed: ' + e); }
-            });
-    })
-    .catch(err => {
-        console.log('Content reading failed: ' + err + '; Re-reading directory tree');
-        return mirrorDirTree(odir, file => { return { file: file }; }, true);
-    })
-}
-
-function sanitize(path) {
-    return utils.diaStrip(path).replace(/\ /g, '_')
-        .replace(/([.][^.]*)$/, match => String.prototype.toLowerCase.call(match));
-}
diff --git a/src/utils.js b/src/utils.js
index fb5aa55..b162fe8 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -121,20 +121,21 @@ function diaStrip(str) {
     return str;
 }
 
-function writeFile(data, fname, dir) {
-    return new Promise((resolve, reject) => fs.writeFile(path.join(dir, fname), data, err => {
+function writeFile(data, fname, dir, returnFileName) {
+    var serialized = typeof data === 'object' ? JSON.stringify(data) : data;
+    return new Promise((resolve, reject) => fs.writeFile(path.join(dir, fname), serialized, err => {
         if (err) reject('Writing content file failed: ' + err)
-        resolve(fname);
+        resolve(returnFileName ? fname : data);
     }));
 }
 
-function copyFile(srcDir, fname, destDir) {
+function copyFile(sdir, sfname, ddir, dfname) {
     return new Promise((resolve, reject) => {
-        var rs = fs.createReadStream(path.join(srcDir, fname));
-        var ws = fs.createWriteStream(path.join(destDir, fname));
+        var rs = fs.createReadStream(path.join(sdir, sfname));
+        var ws = fs.createWriteStream(path.join(ddir, dfname || sfname));
         rs.on('error', err => reject('File reading failed: ' + err));
         ws.on('error', err => reject('File writing failed: ' + err));
-        ws.on('finish', () => resolve(fname));
+        ws.on('finish', () => resolve(dfname || sfname));
         rs.pipe(ws);
     });
 }